We have a NetApp FAS2020 with a fiber-connected shelf and use NFS for
the VMware VMs stored on it.  We don't run UV on it, though.  The
problem with running an I/O intensive app like UV on a SAN is that
there's no way to predict the concurrent I/O demands that will be placed
on the SAN by other virtual machines at any given time.  To get
predictable perfomance from an I/O intensive app, direct-attached
storage is usually going to be the best bet.  NetApp has recently
addressed this issue, though, with a product called Flash Cache, which I
believe can be retrofitted into existing FAS models.  Flash Cache stores
frequently accessed data on SSDs that sit between the network and the
hard drives.

-John

-----Original Message-----
From: u2-users-boun...@listserver.u2ug.org
[mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of John Thompson
Sent: Tuesday, August 09, 2011 10:44 AM
To: U2 Users List
Subject: Re: [U2] UV 11.1 64-bit on Cisco UCS with NetApp Filer?

Googling during my lunch...

I'm guessing this is the box you have, or something similar:
http://www.netapp.com/us/products/storage-systems/fas3100/fas3100-tech-s
pecs.html

You might try disabling that RAID DP stuff they have and just running
RAID 1
or RAID 10, as a first step in your process of elimination.

Any of the options I suggested are a project.
Reconfiguring just the disk shelf is less work than reconfiguring a host
for
it to run on.

If you are running a fiber link to it, you probably can't use NFS, so
that
idea is out.

If you are doing any de-duplication/compression, turn that off too.

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